(4) Fair Value Measurements (Details Narrative) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Money Market Funds - Level 1	$ 5,501,965	$ 4,285,309
Government Securities and Corporate Debt Securities - Level 2	7,838,590	10,530,942
Money Market Funds
Money Market Funds - Level 1	5,501,965	4,285,309
Fair Value, Inputs, Level 1
Money Market Funds - Level 1	5,501,965	4,285,309
Fair Value, Inputs, Level 1 | Money Market Funds
Money Market Funds - Level 1	5,501,965	4,285,309
Fair Value, Inputs, Level 2
Government Securities and Corporate Debt Securities - Level 2	7,838,590	10,530,942
Fair Value, Inputs, Level 2 | Money Market Funds
Money Market Funds - Level 1	0	0
Fair Value, Inputs, Level 2 | Government Securities and Corporate Debt Securities
Government Securities and Corporate Debt Securities - Level 2	$ 7,838,590	$ 10,530,942